Permutation padlock



H. WILLIAMS.

PERMUTATION PADLOCK. APPLICATION FILED FEBLZ. 1921.

1,413,209. Patented Apr. 18, 1922.

m any il/l/llams IPEBMUTATION PADLOCK.

a l ance.

Specification of Letters Patent. Patented Ainfils, 1922 s Application filed February 2, 1921. Serial No. 441,841.

To all 107mm it mag concern Be it known that I, HARRY V /iLLrAMs, a

subject of the King of Great Britain, and

a resident of the city of Vancouver, in the Province of British Columbia, Canada, have invented certain new and useful Improvements in Fermutation Padlocks, of which the following is a specification; 1

My invention relates to improvements in looks, of the permutation type, and the object of my invention is to provide a device of this nature whichis simple in construction having a minimum numbercofparts so that it can be manufactured and sold at a low cost while fulfilling with equal facility and efficiency the functions of more expensive locks and at the same time 'beingcapable of a wide range of different combinations.

I attain this object by the construction illustrated in the accompanying drawings in whichi Fig. 1 is a view'of the lock, inside elevation.

Fig. 2 is a plan View.

Fig, 3 is a'detail view ofthe. alphabetical disc.

Figs. 4, 5 and 6- are detail views of the combination discs.

Figs. 7 and 8 are views of the operating shaft and operating shaft sleeve respectively. Y

Fig.9 is an inside view of one halfof the lock casing.

Fig. 10 is an inside view of the opposite halfof the lock casing.

Fig. 11 is a side view of the bolt.

Fig. 12' is an edge view.

Fig. 13 is a plan view of section.

Similar figures of reference indicatesimithe lock; p art lar parts throughout the several views, .7

I in Figs. 9 and The lock consists'o'f a casingconstructed preferably of two plates 1 and 2, as shown 10 respectively. these plates being secured together by riveting or in any other approved manner. The upper, lower, and end edges of the plates are flanged in wardly, as at 3 i5-6 and 7-8-9 and 10 respectively, which flanges meet when the plates are assembled together so as to form a casing in which the working parts, hereinafter mentioned, are completely enclosed, and in the upper and lower flanges of this casing openings 1112 and 13-14 are provided, in which openings are slidably mount peripheries of the ed the side bars 15 and 16 of the locking shackle 17, thebars 15 and 16 being slotted as at 18 and 19' respectively, as shown in Fig. 1.' A square aperture 20 isprovidedin plate 1 in which extends the end of a'square sleeve 21 which extends within the casing to within a short distance of the plate 2 and which sleeve/is providedwith a round bore 22 in which is rotatably mounted the operating shaft 23, the inner end of which shaft is turned and supported in a recess 24. formed on the inner face of the plate 2 while its outer end is extended exteriorly of the plate 1 and provided with a knurled l1tCl25. Theshaft'23 where it projects through the sleeve 21 is squared, as at 26, and on this squared portion is fitted a circular'disc 27 on the outer face of which are arranged annularly the-letters of the alphabet and on its inner face the disc' 27 is pro-- vided. with a pin 28, which pin extends through slots 29, 30- and 31 formed respec-: tively in discs 32, 33, and" 34:, these discs being arranged side by side on the sleeve 21, and being separated from each othe'r'by suitable washers 35 so as to keep. the discs free from the frictional contact with each other. The three discs 32, 33 and 3t and the alphabetical disc 27 are each provided with a notch, 36, 3'7, 38 and; 39 respectively, as shown, and their peripheries lie close-to the bars 15 and 16 of the shackle 17. Disc 27 is made slightly larger in diameter than discs 32, 33, and 34i'and this diso27'is also provided with notches 39 spaced equidis'- tantly around its periphery, the bottomsof which notches are in alignment with the discs 32, 33, and. 3%, these notches being provided to disguise, as it were, the'true position. of the opening notches 36', 37, 38, and 39, and prevent feeling out the combination, since the bolt can drop into any oneof the notches 39: and without indicating which-notch is thecorrect one, that is, 39, to anyone not knowing the combination. The inner end of shaft 23 is riveted over slightly on the disc 27 to prevent withdrawal of the shaft after assembling.

40 indicates the bolt, formed of a flat bar adapted to fit slidably in a groove 41 formed in the inside face of the plate 1, thebar lying flush with the plate and being provided with a slot 42 so that it may be fitted over the sleeve 21. y The bar adj acent its inner end is provided with a tongue 43 which extends transversely of the casing between the peripheries of the discs and the side bar 15 of the shackle 17, while its other end. is reduced as at 44; and extended exteriorly of the casing and turned over on its outer end, as at 45, so that it can be gripped and pulled outwardly when unlocking the lock, as hereinafter described The reduced end 44 of the bolt is provided with a thickened portion 47 adapted to fit the slot 19 in the'bar 16 when the device is locked. 46 indicates an opening in plate 1 through which the letters on the disc 27 may beseen.

' The operation of the lock may be briefly described as follows, it being understood that in any one lock a predetermined combination of letters is arranged together with predetermined lengths of slots in the discs which when actuated as directed will bring all the notches 36, 37 and 38 and 39 into alignment and that when locked the tongue 43 is engaged inthe slot 19 ofthe bar 15, the

disengagetongue 13 being prevented from meet from the slot by the peripheries of the discs, which lie close to thehar Now, to unlock, the alphabetical disc is turned in the specified direction by means of the head to bring the letters of the combination in succession to theopening 46, at the completion of which operation the notches will be in line with each other opposite the tongue 43, which may then. be drawn out of the slot able in. said casing 18 into the notches by pulling on the end 4L5, allowing the locking shackle to be withdrawn. For instance, suppose, the combination in this case is AB, W, and F, then the head 25 would be rotated to first bring AB to the opening 4.6, then back to bring W to the opening and finally in the opposite direction to bring F to the opening, when the lock would. be ready to open. Thelocking is etfected by pushing in the bolt to replace the tongue in slot 18 and then turning the head 45 25 a few times to destroy the combination setting, and disarrange the aligned osition of the notches. V

f l/Vhat Iclaim as my invention 2- 1.. .A lock'comprising a casing having an aperture on one side, a locking staple 'siidoncbar which is notched, an operating shaft within the easing extending exteriorly thereof and provided with a head, an index disc secured to the inner e' nd of the said shaft the index of which i observable at the casing aperture,

said disc having a peripheral. notch and a iiin on its inner face a non-rotatable sleeve of the pinin the opposite directions'alternately rotates the disc to bring the respective notches into alignment one with the other, and a bolt having a tongue seated in the staple notch and normally held against wit-hdrawal by the. disc peripheries, the with drawal of the tongue being rendered possible by the aligning of the notches 2. A look comprising a locking staple both bars of which. are notched, a plurality'o l discs rotatably mounted-between the bars of the staple each having a peripheral notch, a "\vithdrawahlc bolt having a tongue seated in the staple notch and an enlargei'nent scated in the other staple notch and held against withdrawal, by the said discs, and. means for rotating said discs independently to bring their notches. into alignment one with the other.

and with the said tongue.

3. A look comprising a casing having an aperture onone side, a notched locking stas pie slidable in. saidv casing, an 7, operating shaft within the casing, extending exteriorly thereof and provided with a h'ead,an index disc secured to the inner end ofsaid shaft the index oi which is observable at the casing aperture, said dischaving a peripheral notch and a pin on its inner face, anon-rotatable sleeve through which said shaft extends, a plurality ofdiscs rotatably mounted on said sleeve notched on their peripheries eachprovided with curved slots of varying length through which the said pin extends whereby rotation ot the pin in opposite directions alternately rotates the discs to bring the respective notches into alignment one with the other, said discs beingof less diameterthan the index disc, and a, bolt adapted to c o-act with the notched. against withdrawal by the disc peripheries the withdrawal of which is rendered possible by the aligning or the said disc notches. 1

Signed at Vancouver, B. C., Canada, this 24th dayot January, 1921.

i HARRY. WILLIA.MS.-

staple held' normally 

